GC-Wiki is an internal wiki run by the United Kingdom's Government Communications Headquarters (GCHQ). It is the UK's equivalent to the NSA's NSANet.[1] The GC-Wiki is generally classified above top secret.[2] Members of the United States Intelligence Community have access to GC-Wiki.[1]
GQHQ trustingly shares its top-secret British material with the NSA, which in turn makes it available to an army of outside contractors. This meant Snowden had access to British secrets, too, through GCHQ's parallel intranet, GCWiki.